Home / 22,311.29-30,787.29-13,358.55

Finding the Fourth Proportional to 22,311.29, 30,787.29 and 13,358.55

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Solution

The fourth proportional to 22,311.29, 30,787.29 and 13,358.55 is: 18,433.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,311.29 : 30,787.29 = 13,358.55 : x
  2. Step 2: Convert to fraction form
    22,311.29/30,787.29 = 13,358.55/x
  3. Step 3: Cross multiply
    22,311.29x = 30,787.29 × 13,358.55
  4. Step 4: Simplify right side
    22,311.29x = 411,273,552.83
  5. Step 5: Solve for x
    x = 411,273,552.83/22,311.29
  6. Step 6: Final answer
    x = 18,433.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.